Trail clearing tools

I live near Afan Skyline which still has parts closed from the storms, and on others there are still trees down meaning difficulty getting over/under them or the ground around the trail becoming a bog as people skirt around the tree.

These trails are probably low priority to clear so how practical is it to consider tackling the fallen trees with a Silky Katanaboy, probably the 650 one as the trees are big?

I have a Bigboy and often clear walking trails near me but that's too small for these trees.

Can't take a chain saw as it is NRW land, but that would also be a big lump to carry around to get to the trail section in question.